In Young's double-slit experiment, a student observes \(8\) fringes in a certain segment of the screen when a monochromatic light of \(600\) nm wavelength is used. If the wavelength of light is changed to \(400\) nm, then the number of fringes he would observe in the same region of the screen is:
1. \(12\)
2. \(6\)
3. \(8\)
4. \(9\)
Subtopic: Young's Double Slit Experiment |
75%
From NCERT
NEET - 2022
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The angle between the electric lines of force and the equipotential surface is:
1. \(180^\circ\)
2. \(0^\circ\)
3. \(45^\circ\)
4. \(90^\circ\)
1. \(180^\circ\)
2. \(0^\circ\)
3. \(45^\circ\)
4. \(90^\circ\)
Subtopic: Equipotential Surfaces |
81%
From NCERT
NEET - 2022
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A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (\(v\)) as a function of time (\(t\)) is:
1. \(D\)
2. \(A\)
3. \(B\)
4. \(C\)
1. \(D\)
2. \(A\)
3. \(B\)
4. \(C\)
Subtopic: Viscosity |
71%
From NCERT
NEET - 2022
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Let \(T_1\) and \(T_2\) be the energy of an electron in the first and second excited states of hydrogen atom, respectively. According to Bohr's model of an atom, the ratio \(T_1:T_2\) is:
1. \(9:4\)
2. \(1:4\)
3. \(4:1\)
4. \(4:9\)
1. \(9:4\)
2. \(1:4\)
3. \(4:1\)
4. \(4:9\)
Subtopic: Bohr's Model of Atom |
64%
From NCERT
NEET - 2022
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The graph which shows the variation of de Broglie wavelength \((\lambda)\) of a particle and its associated momentum \((p)\) is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: De-broglie Wavelength |
83%
From NCERT
NEET - 2022
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Two pendulums of length \(121\) cm and \(100\) cm start vibrating in phase. At some instant, the two are at their mean position in the same phase. The minimum number of vibrations of the shorter pendulum after which the two are again in phase at the mean position is:
| 1. | \(8\) | 2. | \(11\) |
| 3. | \(9\) | 4. | \(10\) |
Subtopic: Angular SHM |
67%
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NEET - 2022
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The volume occupied by the molecules contained in \(4.5\) kg water at STP, if the molecular forces vanish away, is:
1. \(5.6\) m3
2. \(5.6\times10^{6}\) m3
3. \(5.6\times10^{3}\) m3
4. \(5.6\times10^{-3}\) m3
1. \(5.6\) m3
2. \(5.6\times10^{6}\) m3
3. \(5.6\times10^{3}\) m3
4. \(5.6\times10^{-3}\) m3
Subtopic: Ideal Gas Equation |
From NCERT
NEET - 2022
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A nucleus of mass number \(189\) splits into two nuclei having mass numbers \(125\) and \(64.\) The ratio of the radius of two daughter nuclei respectively is:
| 1. | \(25:16\) | 2. | \(1:1\) |
| 3. | \(4:5\) | 4. | \(5:4\) |
Subtopic: Nucleus |
81%
From NCERT
NEET - 2022
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Given below are two statements:
| Assertion (A): | The stretching of a spring is determined by the shear modulus of the material of the spring. |
| Reason (R): | A coil spring of copper has more tensile strength than a steel spring of the same dimensions. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is false but (R) is true. |
| 4. | (A) is true but (R) is false. |
Subtopic: Shear and bulk modulus |
From NCERT
NEET - 2022
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A capacitor of capacitance \(C=900~\text{pF}\) is charged fully by \(100~\text{V}\) battery \(B\) as shown in Figure \((a)\). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance \(C=900~\text{pF}\) as shown in Figure \((b)\). The electrostatic energy stored by the system \((b)\) is:
| 1. | \(1.5\times 10^{-6}~\text{J}\) | 2. | \(4.5\times 10^{-6}~\text{J}\) |
| 3. | \(3.25\times 10^{-6}~\text{J}\) | 4. | \(2.25\times 10^{-6}~\text{J}\) |
Subtopic: Energy stored in Capacitor |
56%
From NCERT
NEET - 2022
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